Operation manual of solar water controller SR868C8/SR868C8Q
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►Press “SET” button, parameter” OFF” blinks
on the screen.
►R”“-”button, “DVWG ON” blinks on
the screen, function is triggered.
►Press “ESC” button to exit the menu or wait for 20 seconds to exit automatically,
parameters are saved automatically.
4.6.2 CIRC Temperature controlled hot water circulation pump
Description:
Solar system can provide temperature-controlled hot water circulation function; this
function needs an extra hot water circulation pump (connect output port P2) and a
sensor, which is installed on the return pipe of hot water (connect input port T4). When
the temperature signal of sensor T4 is less than the preset turning on temperature of
circulation pump, the hot water circulation pump (P2) triggers and works till the
temperature exceeds the turning off temperature.
Factory set
: the desired hot water temperature is 40
o
C, when return temperature T4
drops to 35
o
C, circulation pump P2 is triggered, when T4 rises up to 40
o
C, circulation
pump P2 is ceased.
Condition for triggering hot water circulation pump
: only when tank temperature T3
is 1
o
C higher than the required hot water temperature, hot water circulation pump just
can be triggered. T3 is alternative sensor, when no sensor (T3) is installed in the top
part of tank, controller will use the signal of sensor T2 automatically to control the
circulation pump P2.
Note:
in order to avoid large measuring error, the sensor T4 on hot water return pipe
should be installed 1.5m far away from tank. This function isn’t available in all systems.
Setup steps
:
To access main menu FUN, then select
submenu CIRC, “CIRC - - -” displays on screen,
factory set is off.
►Press “SET” button, parameter “- - -” blinks on screen.
►Repress “SET” button, parameter “40
℃
” blinks on screen
►Press “+”“-” button, to adjust the temperature of hot water return, adjustable range:
2
℃～
95
℃）
, after function is activated, factory set is 40
℃
►Press “SET” button again, “- - -” blinks on screen, function is deactivated
